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Abstract
The aim of this study is to analyses tangential wedged beam and field in field technique doses using the parameters of homogeneity index, conformity index, coverage index and dose-volume histogram for target volume. The volume of healthy tissues within the irradiated volume investigated on both side lungs and heart doses of left and right beast.
Material and methods: 10 patients treated with intact breast cancer. All plans were created/generated: a standard tangential plan with tangential wedges beam compared with Field in Field (FIF) plan. Three indices were used: the dose Homogeneity index (DHI), Conformity index (CI), and Coverage index. Calculation was also measured of bilateral lungs and heart.
Results Dose homogeneity index was significantly lower for FIF in DHI, 0.12 than for the wedges DHI=0.17. all the results of FIF is better than tangential wedges beam.
Conclusion: In this study, the field-in-field method was assessed both clinically and dosimetrically for patients with breast cancer. During the dosimetry analysis we concluded that the FIF approach is a fast and effective technique that may be applied to breast radiation. And concluded that the treatment method of field in field is better than tangential wedged beam.